public class ParameterApp {
  public static void main(String[] args) {
    int i = 10;

    System.out.println(i);
    
    ParameterChanger pc = new ParameterChanger();
    pc.weird(i);
    System.out.println(i);

    i = pc.smarter(i);
    System.out.println(i);
  }
}